1.相关信息
设置编辑框内容的字体样式,包括加粗、下划线、斜体、蓝色、红色、黑色
2.界面展示
3.相关代码
cpp
#include "dialog.h"
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QCheckBox>
#include <QRadioButton>
#include <QPlainTextEdit>
#include <QPushButton>
// 下划线
void Dialog::do_chkBoxUnder(bool checked)
{
QFont font = txtEdit->font();
font.setUnderline(checked);
txtEdit->setFont(font);
}
// 斜体
void Dialog::do_chkBoxItalic(bool checked)
{
QFont font = txtEdit->font();
font.setItalic(checked);
txtEdit->setFont(font);
}
// 加粗
void Dialog::do_chkBoxBold(bool checked)
{
QFont font = txtEdit->font();
font.setBold(checked);
txtEdit->setFont(font);
}
// 设置颜色
void Dialog::do_setFontColor()
{
QPalette plet = txtEdit->palette();
if(radioRed->isChecked()){
plet.setColor(QPalette::Text, Qt::red);
}else if(radioBlack->isChecked()){
plet.setColor(QPalette::Text, Qt::black);
}else if(radioBlue->isChecked()){
plet.setColor(QPalette::Text, Qt::blue);
}
txtEdit->setPalette(plet);
}
Dialog::Dialog(QWidget *parent)
: QDialog(parent)
{
// 竖布局:字体样式
chkBoxUnder = new QCheckBox("下划线");
chkBoxItalic = new QCheckBox("斜体");
chkBoxBold = new QCheckBox("加粗");
QHBoxLayout *HLay1 = new QHBoxLayout();
HLay1->addWidget(chkBoxUnder);
HLay1->addWidget(chkBoxItalic);
HLay1->addWidget(chkBoxBold);
// 竖布局:字体颜色
radioBlack = new QRadioButton("黑色");
radioRed = new QRadioButton("红色");
radioBlue = new QRadioButton("蓝色");
QHBoxLayout *HLay2 = new QHBoxLayout();
HLay2->addWidget(radioBlack);
HLay2->addWidget(radioRed);
HLay2->addWidget(radioBlue);
// 编辑框
txtEdit = new QPlainTextEdit();
txtEdit->setPlainText("hello world \n 手工创建");
QFont font = txtEdit->font();
font.setPointSize(20); // 字体大小
txtEdit->setFont(font);
// 确认、取消、退出
btnOk = new QPushButton("确定");
btnCancel = new QPushButton("取消");
btnClose = new QPushButton("退出");
QHBoxLayout *HLay3 = new QHBoxLayout();
HLay3->addStretch();
HLay3->addWidget(btnOk);
HLay3->addWidget(btnCancel);
HLay3->addStretch();
HLay3->addWidget(btnClose);
QVBoxLayout *VLay = new QVBoxLayout();
VLay->addLayout(HLay1);
VLay->addLayout(HLay2);
VLay->addWidget(txtEdit);
VLay->addLayout(HLay3);
setLayout(VLay);
// 信号与槽
connect(chkBoxUnder, SIGNAL(clicked(bool)), this, SLOT(do_chkBoxUnder(bool)));
connect(chkBoxItalic, SIGNAL(clicked(bool)), this, SLOT(do_chkBoxItalic(bool)));
connect(chkBoxBold, SIGNAL(clicked(bool)), this, SLOT(do_chkBoxBold(bool)));
connect(radioRed, SIGNAL(clicked()), this, SLOT(do_setFontColor()));
connect(radioBlack, SIGNAL(clicked()), this, SLOT(do_setFontColor()));
connect(radioBlue, SIGNAL(clicked()), this, SLOT(do_setFontColor()));
connect(btnOk, SIGNAL(clicked()), this, SLOT(accept()));
connect(btnCancel, SIGNAL(clicked()), this, SLOT(reject()));
connect(btnClose, SIGNAL(clicked()), this, SLOT(close()));
setWindowTitle("手工打造UI");
}
Dialog::~Dialog() {}